How Age Is Calculated for Defence School Exams
This is the most common source of confusion for parents. Understanding the cutoff date system will save you from expensive mistakes — see our detailed Sainik School admission eligibility guide for more.
Every defence school exam has a fixed cutoff date — a specific date on which your child's age is measured. Your child's age on the day of the exam does not matter. What matters is how old they are on the cutoff date.
What Is a Cutoff Date?
A cutoff date is the reference date used to calculate a student's age for eligibility. For example, if the cutoff date is 31 March 2027 and your child is born on 1 April 2015, they turn 12 on 1 April 2027 — but on 31 March 2027, they are still 11 years and 364 days old. This one-day difference can make them ineligible.
Cutoff Dates by Exam
| Exam | Cutoff Date | Notes |
|---|---|---|
| AISSEE Class 6 | 31 March of admission year | Sainik Schools admission year starts April |
| AISSEE Class 9 | 31 March of admission year | Same as Class 6 |
| RMS Class 6 | 31 March of admission year | Rashtriya Military Schools |
| RMS Class 9 | 31 March of admission year | Same cutoff as Class 6 |
| RIMC | 1 January of entry term | Two intakes — January & July |
Why Parents Often Get This Wrong
- They calculate age as of today, not as of 31 March
- They count the birthday month itself as a completed year
- They use the exam date instead of the cutoff date
- They forget that age limits are usually both minimum AND maximum
10 Practical Age Examples
| Date of Birth | Age on 31 Mar 2027 | Eligible For | Class | Reason |
|---|---|---|---|---|
| 1 Apr 2015 | 11 years 364 days | AISSEE Cl.6 | 6 | Age = 11 on cutoff ✔ |
| 1 Apr 2014 | 12 years 364 days | AISSEE Cl.6 | 6 | Age = 12 on cutoff ✔ |
| 31 Mar 2016 | 11 years exactly | AISSEE Cl.6 | 6 | Min age met exactly ✔ |
| 2 Apr 2016 | 10 years 363 days | Not Eligible | — | Below minimum age for Cl.6 |
| 31 Mar 2013 | 14 years exactly | AISSEE Cl.9 | 9 | Age = 14 on cutoff ✔ |
| 1 Jan 2014 | 13 years 89 days | AISSEE Cl.9 | 9 | Within 13–15 range ✔ |
| 1 Jan 2010 | 17 years 89 days | RIMC (Jan) | — | Within 11.5–13 band? Check RIMC rules |
| 15 Sep 2014 | 12 years 197 days | AISSEE Cl.6 | 6 | Age = 12 on cutoff ✔ |
| 1 Apr 2011 | 15 years 364 days | AISSEE Cl.9 | 9 | Age = 15 on cutoff ✔ |
| 2 Apr 2011 | 15 years 363 days | Not Eligible | — | Exceeds max age of 15 for Cl.9 |
Eligibility Rules for Each Defence School Exam
Detailed rules based on the latest available official admission notifications. Always verify with the official notification before applying. You can also read our complete Sainik School eligibility guide for a deeper breakdown.
AISSEE Class 6 Eligibility (Sainik School)
The All India Sainik Schools Entrance Examination (AISSEE) for Class 6 is the most popular defence school entrance exam in India, conducted by the National Testing Agency (NTA) on behalf of the Sainik School Society.
Age Criteria
- Minimum Age: 10 years as on 31 March of the admission year
- Maximum Age: 12 years as on 31 March of the admission year
Educational Qualification
The candidate must have passed or be appearing in Class 5 at the time of examination. Students from CBSE, ICSE, and all State Boards are eligible.
Nationality
Indian nationals only. Children of Indian nationals living abroad (OCI/PIO) should verify eligibility with the concerned Sainik School.
Gender Eligibility
Both male and female students are eligible. Sainik Schools were opened to girls from the 2021-22 academic session. Read more in our dedicated guide on Sainik School admission for girls.
Medical Fitness
Candidates must be medically fit as per the standards laid down by the respective school. Detailed medical standards are prescribed in the official prospectus — see our full breakdown of medical standards for Sainik Schools.
Reservation
- 25% seats reserved for children of Defence Service Personnel
- SC/ST reservations as per government norms
- Each state has a quota based on representation
AISSEE Class 9 Eligibility (Sainik School)
Age Criteria
- Minimum Age: 13 years as on 31 March of the admission year
- Maximum Age: 15 years as on 31 March of the admission year
Educational Qualification
The candidate must have passed Class 7 and must be studying in or must have passed Class 8.
Subjects
The exam covers Mathematics, Intelligence Test, Language (English/Hindi), and General Knowledge / Science. Review the complete Sainik School syllabus for a topic-wise breakdown.
Rashtriya Military School (RMS) Class 6 Eligibility
There are five Rashtriya Military Schools (formerly King George's Schools) in India: Ajmer, Belgaum, Chail, Dholpur, and Bangalore. Admissions are through a separate centralised entrance exam — see our overview of military schools in India for a full comparison.
Age Criteria
- Minimum Age: 10 years as on 31 March of the admission year
- Maximum Age: 12 years as on 31 March of the admission year
Gender
Boys only. RMS has not yet been opened to girl students as of the latest notification. Check the official notification for any updates.
Educational Qualification
Passed or appearing in Class 5 from a recognised school.
Priority Categories
- Ward of serving/retired Army/Navy/Air Force personnel
- Ward of ex-servicemen
- Ward of War Widows
- Ward of civilians (remaining seats)
Rashtriya Military School (RMS) Class 9 Eligibility
Age Criteria
- Minimum Age: 13 years as on 31 March
- Maximum Age: 15 years as on 31 March
Educational Qualification
Must have passed Class 7 or be currently studying in Class 8.
Gender
Boys only.
RIMC (Rashtriya Indian Military College) Eligibility
RIMC, Dehradun, is one of India's most prestigious defence schools. It is a feeder institution for the National Defence Academy (NDA). The entrance exam is conducted twice a year for the January and July terms. Learn more about the Rashtriya Indian Military College and its legacy.
Age Criteria
- For January Term: Age between 11½ and 13 years as on 1 January of the year of entry
- For July Term: Age between 11½ and 13 years as on 1 July of the year of entry
Gender
Boys only. RIMC has not opened admission for girl students.
Educational Qualification
Must have passed Class 7 from a recognised school (CBSE, ICSE, or State Board).
Nationality
Indian nationals. Sons of Gorkha subjects of Nepal who are domiciled in India are also eligible.
Minimum % Required
Candidates must have scored at least 50% marks in aggregate in Class 7. Some states may have different cut-off norms at the state selection level.
Selection Process
Written test at state level → Medical examination → Final merit list. Selection is extremely competitive with students from across India competing for approximately 25 seats per term. See the complete RIMC admission process and RIMC syllabus for a step-by-step breakdown.
Complete Eligibility Reference Table
| Exam | Entry Class | Min Age | Max Age | Gender | Qualification | Cutoff Date | Conducted By |
|---|---|---|---|---|---|---|---|
| AISSEE | Class 6 | 10 years | 12 years | Boys & Girls | Passed/Appearing Cl. 5 | 31 March | NTA |
| AISSEE | Class 9 | 13 years | 15 years | Boys & Girls | Passed/Appearing Cl. 8 | 31 March | NTA |
| RMS | Class 6 | 10 years | 12 years | Boys only | Passed/Appearing Cl. 5 | 31 March | Centralised Board |
| RMS | Class 9 | 13 years | 15 years | Boys only | Passed/Appearing Cl. 8 | 31 March | Centralised Board |
| RIMC | Class 8 | 11.5 years | 13 years | Boys only | Passed Cl. 7 (50%+) | 1 Jan / 1 Jul | RIMC, Dehradun |
* Age limits and criteria are based on latest available notifications. Verify with the official notification before applying. For a comparison with other boarding options, see our list of top 10 boarding schools in India.
Step-by-Step Guide: How to Use This Calculator
Step 1 — Enter Your Child's Date of Birth
Select the exact date of birth from the date picker. Use the date as mentioned in the school records or birth certificate — not an approximation. Even a one-day difference can affect eligibility.
Step 2 — Select Gender
Select male or female. This determines eligibility for RMS and RIMC (boys-only institutions) and filters results accordingly.
Step 3 — Select Current Class
Choose the class your child is currently studying in. This helps the calculator identify which entry class your child can apply for. If your child is in Class 5, see our dedicated Sainik School preparation guide for Class 5.
Step 4 — Choose Target Exam (Optional)
If you already know which exam you are targeting, select it. If you are unsure, leave it as "All Defence Schools" to see all possibilities.
Step 5 — Click Check Eligibility
The results appear instantly. You will see age on cutoff date, eligible exams, class of entry, and personalised next steps.
How to Verify Eligibility
This calculator uses standard rules from official admission notifications. To verify independently:
- Visit the official website of NTA (nta.ac.in) for AISSEE notifications
- Visit the official RIMC website for RIMC notifications
- Check the notification PDF for exact age limits and cutoff date
- Calculate your child's age on the stated cutoff date manually, or cross-check using a tool like calculator.net's age calculator
Documents Required
For a complete checklist with sample formats, see our detailed guide on documents required for Sainik School admission.
| Document | Purpose | Required For |
|---|---|---|
| Birth Certificate | Age proof | All exams |
| Aadhaar Card | Identity & address | All exams |
| School Bonafide Certificate | Class verification | All exams |
| Mark Sheet (Cl. 7) | 50% score proof | RIMC |
| Service Certificate | Defence quota | RMS priority |
| Caste Certificate | SC/ST reservation | If applicable |
| Domicile Certificate | State quota | AISSEE |
| Passport-size Photograph | Application form | All exams |
What Happens After You Check Eligibility?
If Your Child Is Eligible for AISSEE
Great news. Now it's time to start preparing systematically.
- Download the latest AISSEE syllabus and mark scheme
- Practice with AISSEE mock tests to understand the question pattern
- Refer to recommended AISSEE books for subject-wise practice
- Identify weak areas in Maths, Science, Language, and GK
- Join a reputed Sainik School coaching programme if self-study is not enough
- Build a reading habit for English language and comprehension
- Check available AISSEE scholarships to ease the financial planning
If Your Child Is Eligible for RMS
- Study the RMS exam pattern — it is different from AISSEE in some papers
- Focus heavily on English, as RMS places a high emphasis on language proficiency
- Practise analytical reasoning and mathematical problem solving
- Prepare for the interview and personality test rounds
- Build physical fitness from an early stage — schools assess overall development
- Join our RMS coaching programme for structured, exam-focused preparation
If Your Child Is Eligible for RIMC
RIMC is the most competitive of the three. Start preparation early and be thorough.
- Score above 50% in Class 7 — this is mandatory
- Master the complete RIMC syllabus for Maths, English, General Knowledge, and Science
- Write the state-level preliminary exam conducted by the state government
- Prepare for the medical examination — vision and physical standards are strict
- Join a dedicated RIMC coaching programme for best results
- Understand the full RIMC admission process before you begin preparation
If Your Child Is Not Eligible Right Now
Do not be discouraged. Most children fall outside the window for one specific year. Here is what you can do:
- Check again next year — eligibility windows change every year
- If too young: start foundation preparation now; the extra time is an advantage
- If too old for Class 6 entry: check Class 9 eligibility
- If your child aims for the armed forces after Class 12, get familiar with the NDA syllabus early
- Explore other military schools in India with different entry windows
- Browse our list of top 10 boarding schools in India as an interim option
- Get free e-counselling for Sainik School admissions to plan the right path forward